DESCRIPTION:
Quantity control valve (High Side) error.

MONITORED PARAMETER:
Quantity control valve.

TYPICAL ENABLING CONDITIONS:
Always enabled

MONITOR SEQUENCE:
None

EXECUTION FREQUENCY:
Continuous when enabling conditions met.

TYPICAL DURATION:
Two seconds

DASH LAMPS:
1. MIL
2. CEL

ENGINE REACTION:
Derate 25%

VERIFICATION:
Engine idle: One minute.

POSSIBLE CAUSES:
1. MCM pin 1 circuit is shorted to ground.
2. Internal short of the quantity control valve.

NOTE: If code 5418-4 is also active, repair 5418-4 first.

PROBABLE CAUSES:
1. Quantity control valve harness connector/wiring.
2. Failed quantity control valve.